Painting Galvalume Siding

Common household products like comet mineral spirits and chlorine bleach can all be used to prepare galvanized steel for painting.

Painting galvalume siding.

The following paints are suggested for field painting galvalume. The vinegar is a mild acid which acts to etch the galvanized coating so the paint will stick. If you re attempting to paint siding panels roof flashing or other materials that have seen exposure to the elements a thorough cleaning is necessary to eliminate any organic contaminants from the outer surface. Galvalume is a type of sheet steel used in a variety of applications including roofing siding furniture gutters and pipe.

Go over the metal with a wire brush to remove any oxidation. Galvalume metal roof and siding panels are coated with a mixture of zinc and aluminum and siliconized coating to help resist scuffs and fingerprints better than a bare metal product. Prime the surface with a primer made for metal. Use a long handled paint roller and apply primer until no portion of the metal is visible.

Treat the sheet steel with an etching primer or flaking will result. The areas to be painted should be dry and clean of visible soil grease oil or other contaminants. Galvalume will reject paint unless it is properly treated. The mixture of zinc and aluminum protects the galvalume metal against corrosion and rust helping galvalume typically last much longer than galvanized steel.

Wipe the galvanized surface down with white vinegar. You can also use oil based alkyd paint but. Usually it s necessary to clean off this coating before applying any paint. If you want to paint a galvalume surface consider a crucial point.

To paint galvalume good coating practice should be observed as with painting any surface. The secret to painting galvanized steel is white vinegar. All of the listed coatings will give good results. White vinegar is both effective and non toxic so it is much safer to use than your average industrial solvent.

Painted metal roofs come with a baked on factory finish and you can re coat these as well as paint bare metal roofing with acrylic latex paint. All you have to do is simply apply the vinegar to a clean rag and then wipe down the galvanized surface.